Perrett has a diploma of teaching, and a Bachelor of Laws, and has previously worked in the Queensland Government under Peter Beattie. In 1993, he completed a Bachelor of Arts with Honours through the University of Queensland. His honours thesis was a study of The Autobiography of Malcolm X. Perrett later received a Bachelor of Laws from Queensland University of Technology in 1999, He worked working as a solicitor of the Supreme Court of Queensland from 1999 to 2005.
He taught for three years in schools on the Darling Downs and Far North Queensland, then another eight years in Brisbane. After working with the Queensland Independent Education Union as an organiser he was given a role as Senior Policy Adviser for then Premier of Queensland, Peter Beattie in 2005, and later for the Minister for Health, Stephen Robertson. Perrett previously ran unsuccessfully for the federal seat of Moreton in 2004.
Perrett has represented the seat of Moreton, Queensland, since the 2007 Australian federal election where he ended Gary Hardgrave"s 11-year term in office with a 7.6-point swing.
Perrett described the victory as surprising, stating "In my wildest dreams I certainly didn"t expect that the seat would be decided as early as it was". Perrett also claimed the victory, over a former multicultural affairs minister, could be put down to the fact that "people are ready for hope and aren"t prepared to stick with the tired old fear factor of John Howard".
Perrett campaigned primarily on issues relating to health and education in the lead up to the election, whilst Hardgrave focused primarily on roads, according to a radio interview. Graham Perrett published his first novel, The Twelfth Fish, in October 2008.
The sex scenes in The Twelfth Fish, while not a major part of the story and rather tame by modern standards, tititlated the political class and the media.
In the lead-up to the 2010 federal election a Christian group put out a flyer calling Perrett the Member for Porn. In his teaching days Perret played in a band (Once I Killed a Gopher with a Stick) and remains a keen fan of music and literature. He enjoys writing and bushwalking.